Force Basics
A force is defined as a ________ or a _______.
push or a pull
Does buoyancy always push upwards or downwards?
Upwards
Snow falling is an example of what force...
Gravity
When our body uses pushes or pulls to move objects, we are using this type of force.
Muscular force
Pushing a toy car is an example of a _________ force and magnets repelling is an example of a _________ force.
contact and non-contact
Give an example of a push
Kicking a soccer ball
Friction is created when two surfaces _________________
Why are people lighter on the moon than they are on Earth?
The force of gravity is stronger on Earth than on the moon.
When you rub a balloon in your hair and try to stick it to the wall, why does it stick?
Rubbing it in your hair caused it to have static electricity.
What is one positive thing and one negative thing about wearing helmets
Prevents injuries, expensive
Give an example of a pull
Pulling a chair out from the table
Does friction make objects speed up or slow down?
Slow down
When two magnets stick together, we say that there is an _______________.
attraction
What happens when you decrease the amount of force you are using to throw a ball with?
The ball will travel slower and not go as far.
What are two positive and two negative things about wearing seatbelts.
Answers will vary
Name the 6 forces studied this term,
Buoyancy, magnetic force, muscular force, friction, gravity, and static electricity
How much friction will two rough surfaces rubbing together cause?
A lot of friction
What happens when the north pole of one magnet is facing the north pole of another magnet?
The magnets will repel
Name one action that uses very little muscular force and one action that uses a lot of muscular force.
Blinking, lifting weights
What causes soil erosion?
Answers will vary
Give an example of something that uses both a push and a pull
When a ping pong ball is placed underwater, why does the water level rise?
The ping pong ball is taking up space in the water, so the water has to go somewhere.
If a pencil and a textbook are dropped from the same height at the same time, which one will hit the ground first and why?
The textbook because it is heavier
What is static electricity?
A pushing or pulling force that is caused by a difference in charged particles.
What can be done to prevent soil erosion?
Answers will vary